On Mon, 10 Nov 2008, Miao Xie wrote:

> on 2008-11-10 14:56 Yasunori Goto wrote:
> > Did you test this patch? Was it OK?

>
> I did it on IA64 just now. Updating top cpuset's mems is fine.
> But I forgot to update the mems_allowed of every task in top cpuset group.
> It is difficult to fix it, because I don't know whether updating a memory-bound
> task's mem_allowed is good or not.
>


There's a fix pending in the mmotm tree that calls
cpuset_update_task_memory_state() in the slow path of the page allocator,
so if one of these tasks fails to allocate memory, its cached mems_allowed
nodemask will be updated to include the new node(s).

The patch is available at
http://userweb.kernel.org/~akpm/mmot...llocator.patch
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